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Chemistry

Chemistry
Which one of the following has greatest mass ?

Hydrogen nucleus
Proton
Electron
Neutron

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Chemistry
The reaction intermediate formed during the preparation of diethylether from ethanol by treatment with H2SO4 is

Free radical
Carbocation
Carbanion
Carbene

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Chemistry
Which of the following is used to denature ethanol ?

Propyl alcohol
Methyl alcohol
Phenol
Methane

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Chemistry
Atoms having the same number of protons but different number of neutrons are called :

Cations
Higgs-boson
Isotopes
Anions

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Chemistry
Which one of the following is used as preservative for foodstuff ?

Sodium Benzoate
Glycerine
Picric acid
Sodium Chloride

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Chemistry
Ultraviolet rays can be used in water treatment as

Precipitator
Disinfectant
Hydrolyser
Flocculator

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